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Patrocinio KL, Santos JR, Granone LI, Ponce MA, Churio MS, Ribeiro LK, Teodoro MD, Llusar R, Andrés J, Longo E, Assis M. Tuning the morphology to enhance the catalytic activity of α-Ag 2WO 4 through V-doping. Dalton Trans 2023; 52:14982-14994. [PMID: 37811730 DOI: 10.1039/d3dt02352d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Here, we present the synthesis of a highly efficient V-doped α-Ag2WO4 catalyst for the oxidation of sulfides to sulfones, exhibiting a high degree of tolerance towards various sensitive functional groups. Remarkably, the catalysts with 0.01% V-doping content exhibited outstanding selectivity towards the oxidation process. Scavenger experiments indicated the direct involvement of electron-hole (e-/h+) pairs, hydroxyl radical (˙OH), and singlet oxygen (1O2) in the catalytic mechanism. Based on the experimental and theoretical results, the higher activity of the V-doped α-Ag2WO4 samples was associated with the preferential formation of the (100) surface in the catalyst morphology.
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Affiliation(s)
- Katiana Lima Patrocinio
- CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905, São Carlos, SP, Brazil
| | - Jeziel Rodrigues Santos
- CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905, São Carlos, SP, Brazil
| | - Luis Ignacio Granone
- Departamento de Química y Bioquímica, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Físicas de Mar del Plata (IFIMAR), CONICET, Universidad Nacional de Mar del Plata (UNMdP), Mar del Plata, 7600, Argentina
| | - Miguel Adolfo Ponce
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Universidad Nacional de Mar del Plata (UNMdP), Mar del Plata, 7600, Argentina
- Physics and Engineering Research Center CIFICEN (CICPBA-CONICET), National University of the Center of the Province of Buenos Aires (UNCPBA), Tandil, B7000GHG, Argentina
| | - Maria Sandra Churio
- Departamento de Química y Bioquímica, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Físicas de Mar del Plata (IFIMAR), CONICET, Universidad Nacional de Mar del Plata (UNMdP), Mar del Plata, 7600, Argentina
| | - Lara Kelly Ribeiro
- CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905, São Carlos, SP, Brazil
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain.
| | - Marcio Daldin Teodoro
- Department of Physics, Federal University of São Carlos, São Carlos, SP 13565-905, Brazil
| | - Rosa Llusar
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain.
| | - Juan Andrés
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain.
| | - Elson Longo
- CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905, São Carlos, SP, Brazil
| | - Marcelo Assis
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain.
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Kaewnuam E, Wantana N, Tanusilp S, Kurosaki K, Limkitjaroenporn P, Kaewkhao J. The influence of Gd2O3 on shielding, thermal and luminescence properties of WO3–Gd2O3–B2O3 glass for radiation shielding and detection material. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2021.109805] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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